1. ELECTRIC ITY

2. ATOMS Atoms are made up of PROTONS, NEUTRONS, and ELECTRONS
Protons have a positive charge
Electrons have a negative charge
Neutrons have a neutral (or no) charge

3. ATOMS Atoms often lose and gain electrons
When atoms lose electrons, their charge becomes positive
Just like with magnets OPPOSITES attract, so an object with a positive charge will be attracted to an object with a negative charge
The attraction of these charges creates ELECTRICITY

4. CURRENT Current – the flow of electrical charges through a material
EXAMPLE – the flow of charges between the balloon and your hair
Conductor – a material through which an electric current can move easily because it has some electrons that are not tightly bound to their atom
Resistor – a material that resists (tries to stop) the flow of an electric charge
Insulators – strong resistors

5. resistors CONDUCTORs CURRENT DOESN’T FLOW THROUGH
CURRENT CAN MOVE EASILY
HAVE MANY FREE ELECTRONS
Copper
Gold
Silver
Aluminum
Graphite
Some liquids and gases
Superconductor has no resistance
Superconductors usually occur at super cold temperatures
CURRENT DOESN’T FLOW THROUGH
Rubber
Plastic
Glass
Dry Cotton
Insulators – strong resistors